Swim has both the nail/dome, and the skillet/curve designs, and although they work awesome for hash oil, they're horrible for dmt. They involve a torch and some heating time. Swim never found an effective way to get spice onto the hot part of the set up, without wasting a large portion of it. Also it's next to impossible to get it to a low enough temp to not burn the spice. Check out this though. swim has the water pipe bowl version. works quite well...

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